<?php
namespace Util;

use Util\Httpclient;

/**
 * 微信服务号权限验证获取
 */
class WechatTicket {
    private $APPID;
    private $SECRET;
    private $request;

    public function __construct() {
        $this->request = new Httpclient();
    }

    public function set($appId, $secret) {
        $this->APPID = $appId;
        $this->SECRET = $secret;
    }

    //用于微信登录CODE的获取
    public function getCode($redirect_uri, $sign = true) {
        $APPID = $this->APPID;
        $uri = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$APPID&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo";
        if ($sign) {
            $uri .= "&scope=snsapi_base";
        }
        redirect($uri);
    }

    //用于微信用户登录后信息的获取
    public function WechatLogin() {
        $APPID = $this->APPID;
        $APPSECRET = $this->SECRET;
        $CODE = $_GET['code'];

        if (isset($CODE) && !empty($CODE)) {
            $open_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$APPID&secret=$APPSECRET&code=$CODE&grant_type=authorization_code";

            $out = $this->request->quickGet($open_url);
            $token = json_decode($out, true);

            $access_token = $token['access_token'];
            $openid = $token['openid'];

            $userinfo_url = "https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN";
            $userinfo = $this->request->quickGet($userinfo_url);

            $userinfo = json_decode($userinfo, true);
        } else {
            $userinfo = "CODE 未获取！";
        }

        return $userinfo;
    }

    //用于获取用户基础信息
    public function UserBaseMsg($open_id) {
        $ACCESS_TOKEN = $this->getAccessToken();
        $UserBaseMsg_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=$ACCESS_TOKEN&openid=$open_id&lang=zh_CN";
        $userinfo = $this->request->quickGet($UserBaseMsg_url);
        $userinfo = json_decode($userinfo, true);
        return $userinfo;
    }
    /*
     * mao
     * 获取所有微信用户openid
     */
    public function GetAllOpenid($open_id){
        $ACCESS_TOKEN = $this->getAccessToken();
        $UserBaseMsg_url = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=$ACCESS_TOKEN&next_openid=$open_id";
        $userinfo = $this->request->quickGet($UserBaseMsg_url);
        $userinfo = json_decode($userinfo, true);
        return $userinfo;
    }


    //订阅号与服务号权限的Access Token获取,并全局保存
    public function getAccessToken() {
        $data = json_decode($this->request->quickGet("access_token.json"));
        if ($data->expire_time < time()) {
            $APPID = $this->APPID;
            $APPSECRET = $this->SECRET;
            $url_token = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$APPID&secret=$APPSECRET";
            $access_token = json_decode($this->request->quickGet($url_token));

            if ($access_token->access_token) {
                $data->access_token = $access_token->access_token;
                $data->expire_time = time() + 7100;

                $fp = fopen("access_token.json", "w");
                fwrite($fp, json_encode($data));
                fclose($fp);
            }
        }

        return $data->access_token;
    }

    //JS-SDK调用的临时凭证
    private function getJsApiTicket() {
        $data = json_decode(($this->request->quickGet("jsapi_ticket.json")));

        if ($data->expire_time < time()) {
            $AccessToken = $this->getAccessToken();

            $jsapi_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$AccessToken";

            $result = json_decode($this->request->quickGet($jsapi_url));

            if ($result->ticket) {
                $data->expire_time = time() + 7100;
                $data->jsapi_ticket = $result->ticket;

                $fp = fopen("jsapi_ticket.json", "w");
                fwrite($fp, json_encode($data));
                fclose($fp);
            }
        }

        return $data->jsapi_ticket;
    }

    //加密后的JS-SDK凭证
    public function getSignPackage() {
        $jsapi_ticket = $this->getJsApiTicket();
        $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') || ($_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";

        $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
        $timeStamp = time();

        $nonceStr = \Org\Util\String::randString(16, 0, "0123456789");

        $string = "jsapi_ticket=$jsapi_ticket&noncestr=$nonceStr&timestamp=$timeStamp&url=$url";

        $signature = sha1($string);
        $signPackage = array('APPId' => $this->APPID,
            'nonceStr' => $nonceStr,
            'timeStamp' => $timeStamp,
            'signature' => $signature);

        return $signPackage;
    }

}

?>